I plugged just the one hose.
Still crackles and pops a little when doing a decell, but it is an improvement.
Hose is on the right side of the throttle bodies. Just pull the hose, (I think it's grey) stuff a tight fitting ball bearing in and re-install the hose.
My question is, removing the pair system a better way to stop the decell popping?
Ride safe, Ted